Resurrection - What Scientific Studies Have Been Done and is it Possible?

There are a few cases where children submerged under very cold water have been revived via electro-shock therapy after 30 minutes of being without a heartbeat or intake of oxygen. That is the absolute limit to resuscitating life after 'death'. No one has been delared dead for more than a day, and survived, much less 3 days. The resurrection story is not at all possible via any past or current scientific measurement or standard for life.